GC1

GC1 or GC-1 may refer to:

Aircraft

 * Cessna GC-1
 * Globe Swift (GC-1/1A/1B)

Minor planets

 * 8204 Takabatake (1994 GC1)
 * 9749 Van den Eijnde (1989 GC1)
 * (10133) 1993 GC1
 * (10328) 1991 GC1
 * 29869 Chiarabarbara (1999 GC1)

Other

 * Sobetirome (GC-1), a thyromimetic drug
 * GC-1 (GigaCluster), a transputer system produced by Parsytec
 * GC-1, an operating division of the Metro Local bus system in Los Angeles, USA
 * Autopista GC-1, a motorway in Gran Canaria, Spain
 * Groupe de combat n°1 (Combat Group No.1), a unit in the Free French Flight known as "Jam"